<script>
    /**
     * 测试一个单文件组件
     */
    export default {
        data(){
            return {
                greeting:'hello vue',
                counter:0
            }
        },
    } 
</script>

<template>
    <slot></slot>
     <button @click="counter++">counter:{{counter}}</button>
    <div class="greet">{{greeting}}</div>
</template>

<style scoped>
    .greet{
        color: green;
    }
</style>